Frequency Output - wtw DIQ/S 182-MOD System Operating Manual

Relay outputs
Function
Settings
Characteristic curve
6 - 18

6.4.5 Frequency output

The characteristic of the frequency output is laid down in the Start
value, End value, Frequency (f) min. and Frequency (f) max. settings.
The fundamentals of the function are described in the introductory
chapter (see section 6.3.3).
In order to set up the Frequency output function for a relay output, the
relay output must be linked with a sensor (see section 6.2.1).
Setting
Measured variable
Start value
End value
Frequency (f) min.
Frequency (f) max.
Frequency with error
Action
If a value is entered for End value that is greater than the Start value,
the output has a positive characteristic curve.
In order to obtain a negative characteristic curve, a value must be
entered for End value that is smaller than the value for Start value.
Selection/Values
Main variable
Adjoining variable
within the
measuring range
(sensor-
dependent)
0 to 120 1/min
0 to 120 1/min
Open
Close
System 182
Explanation
Main variable
designates the
actual measured
parameter of the
sensor (e.g. pH,
oxygen, etc.).
Adjoining variable
designates an
additional
measured
parameter (e.g.
temperature).
Minimum spacing:
5 % of the
measuring range
Minimum spacing:
10 1/min
In case of system
errors or sensor
errors (see page 6-
25), the relay
switches with the
frequency
specified.
Relay action
ba75504e07 04/2012